CN208123221U - It is a kind of to determine torque anti-loosening locking bolt group - Google Patents
It is a kind of to determine torque anti-loosening locking bolt group Download PDFInfo
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- CN208123221U CN208123221U CN201820618503.9U CN201820618503U CN208123221U CN 208123221 U CN208123221 U CN 208123221U CN 201820618503 U CN201820618503 U CN 201820618503U CN 208123221 U CN208123221 U CN 208123221U
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Abstract
Torque anti-loosening locking bolt group is determined the utility model relates to a kind of, it includes bolt, fastening nut, locking nut, the tail portion of the bolt is equipped with two sections of oppositely oriented fastening threads and locking screw into a ladder, the outside of fastening thread is arranged in the locking screw, the upper surface of the fastening nut to match with fastening thread is equipped with the annular convex platform to the waist type shape of central concave, the cylinder boss to match with the annular convex platform of waist type shape is equipped in the lower end surface of the locking nut, the annular convex platform of the waist type shape and the height of cylinder boss are equal to the screw pitch of locking screw, the annular convex platform and cylinder boss of the waist type shape are interference fit, its tolerance being interference fitted matches with locking torque.During the utility model screws, in the waist type boss using the cylinder boss insertion fastening nut of locking nut, it can be realized and determine torque interlocking.In addition, fastening nut and locking nut external structure and size are complete identical, it is easy to use unified tool.
Description
Technical field
Torque anti-loosening locking bolt group is determined the utility model relates to a kind of.
Background technique
Threaded fastener includes screw, bolt and stud etc., is common standard component in every profession and trade.Usual threaded fastener
It using single line regular screw threads, under certain pretightning force effect, will not generally loosen, but when it is vibrated, impacts and variable load
When lotus acts on, the frictional resistance between screw thread pair just will appear instantaneous the phenomenon that reducing or disappearing, after this phenomenon is repeated several times, just
Threaded fastener can be made to loosen, less serious case influences the normal operation of machine, and severe one can jeopardize the safety of the person and equipment, because
This, in order to guarantee that connection is safe and reliable, it is necessary to take effective locking measures.
Locking thread measure is varied, and wherein pairs of anti-loose nut is a kind of common locking thread method, this locking
Method uses bidirectional helical to the interlocking principle in top, when fastening nut is vibrated, impacts and there is the trend that pine moves back, due to
The thread rotary orientation of fastening nut and locking nut is on the contrary, locking nut screwing while fastening nut pine moves back, so that reaching prevents
The purpose that fastening nut pine moves back.But there are unstability for this anti-loose structure, not can guarantee locking thread effect, in addition,
Specific tool is generally required when screw-threaded coupling（Torque spanner）Determine whether torque meets the requirements, operator must be to each
The locking torque of kind bolt is perfectly clear, it has not been convenient to the use and installation personnel operation of general utility tool.
Utility model content
That the purpose of this utility model is to provide a kind of anti-loosing effects is preferable, torque is controllable determines torque anti-loosening locking bolt
Group.
The technical solution of the utility model is, a kind of to determine torque anti-loosening locking bolt group comprising bolt, fastening nut,
The tail portion of locking nut, the bolt is equipped with two sections of oppositely oriented fastening threads and locking screw into a ladder, the lock
The outside of fastening thread is arranged in tight screw thread, and the upper surface of the fastening nut to match with fastening thread is equipped with to central fovea
The annular convex platform of sunken waist type shape is equipped with the cylinder to match with the annular convex platform of waist type shape in the lower end surface of the locking nut
Boss, the annular convex platform of the waist type shape and the height of cylinder boss are equal to the screw pitch of locking screw, the annular of the waist type shape
Boss and cylinder boss are interference fit, and the tolerance of interference fit matches with locking torque.
Preferably, for ease of operation, the screw pitch of the fastening thread is greater than the screw pitch of locking screw.
Preferably, the fastening nut is identical with size with locking nut external structure.
When locking, first fastening nut is screwed to the fastening thread section of bolt, then locking nut is screwed to the lock of bolt
Tight thread segment.During screwing, the cylinder boss of the latter will be embedded in the former waist type boss, and torque interlocking is determined in realization.In addition,
Fastening nut and locking nut external structure and size are complete identical, are easy to use unified tool.
The advantageous effects of the utility model are to form interlocking using oppositely oriented fastening nut and locking nut,
So that nut can not upper and lower play, during screwing, in the waist type boss of the cylinder boss of locking nut insertion fastening nut, i.e.,
It can be achieved to determine torque interlocking.In addition, fastening nut and locking nut external structure and size are complete identical, it is easy to use unified work
Tool.The utility model structure is simple, anti-loosing effect is good, be not necessarily to specific torque tool, easy for installation, versatility is good.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural schematic diagram；
Fig. 2 is the utility model embodiment lock nut structure diagram；
Fig. 3 is the utility model embodiment fastening nut structural schematic diagram.
Specific embodiment
The utility model is described in further details below with reference to the drawings and specific embodiments.
It is a kind of to determine torque anti-loosening locking bolt group comprising bolt 1, fastening nut 2, locking nut 3, institute referring to attached drawing
The tail portion for stating bolt 1 is equipped with two sections of oppositely oriented fastening threads 2 and locking screw 3 into a ladder, and the locking screw 3 is set
It sets in the outside of fastening thread, the upper surface of the fastening nut 2 to match with fastening thread is equipped with the waist to central concave
The annular convex platform 7 of type shape, it is convex in the cylinder that the lower end surface of the locking nut 3 matches equipped with the annular convex platform 7 with waist type shape
Platform 6, the annular convex platform 7 of the waist type shape and the height of cylinder boss 6 are equal to the screw pitch of locking screw, the annular of the waist type shape
Boss 7 and cylinder boss 6 are interference fit, and the tolerance of interference fit matches with locking torque, for ease of operation, described
The screw pitch of fastening thread is greater than the screw pitch of locking screw, the fastening nut 2 and 3 external structure of locking nut and the complete phase of size
Together, when locking, first fastening nut 2 is screwed to the fastening thread section of bolt 1, then locking nut 3 is screwed to the locking of bolt 1
Thread segment.During screwing, the cylinder boss 6 of the latter will be embedded in the former annular convex platform 7, and torque interlocking is determined in realization.In addition,
Fastening nut 2 and 3 external structure of locking nut and size are complete identical, are easy to use unified tool.
In conjunction with attached drawing 1, Fig. 2 and Fig. 3, the working principle for determining torque anti-loosening locking bolt group to the utility model is said
It is bright.Determine torque anti-loosening locking bolt group by double thread bolt 1, fastening nut 2, locking nut 3, by fastener 4 and secure component 5
Composition.The tail portion of double thread bolt 1 is in step-like, including two sections of external screw threads that are oppositely oriented, differing in size, double thread bolt 1
It first passes through by fastener 4 and secure component 5, is then fastened with fastening nut 2, fastening nut 2 must assure that concavity when installing
The annular convex platform 7 of structure screws in 1 major thread section of double thread bolt towards bolt tail；It is finally fastened, is screwed in locking nut 3
1 minor thread section of double thread bolt notices that the round boss 6 of 3 end face of locking nut towards fastening nut 2, reaches specified torque
It will be squeezed into the groove of annular convex platform 7 of fastening nut 2 afterwards, interlock fastening nut 2 and locking nut 3, be integrally formed；Together
When on the contrary form also fastening nut 2 and locking nut 3 because of 1 two sections of thread rotary orientations of double thread bolt nut group in double thread spiral shell
On bolt 1 interlocking can not upper and lower play, and then achieve the purpose that threaded fastener is locking.When needing to dismantle by fastener, it is necessary to
Reaching specified torque fastening nut 2 and locking nut 3 can just disintegrate, latter two nut that disintegrates, can be light as independent individual
Demolition is unloaded.
The bolt head proximal threads diameter of double thread bolt 1 is greater than the diameter of distal threads in the utility model, fastens spiral shell
The internal thread diameter of mother 2 is greater than the internal thread diameter of locking nut 3.The upper surface of fastening nut 2 is ring-like with concave architecture
The lower end surface of boss 7, locking nut 3 has round boss 6, and the height of boss is equal to the spiral shell of 1 minor thread section of double thread bolt
Away from when screwing, the round boss 6 of the latter will be embedded in the groove of the former ring-like boss 7, realize interlocking；In order to make fastening nut 2
Locking is able to cooperate with the boss on locking nut 3, it is necessary to assure fastening nut 2 screws in the amount of appearing of rear thread, meanwhile, locking screw
Mother 3 must design the non-of certain altitude and screw groove, and groove diameter need to be greater than the major thread diameter of double thread bolt 1.
A kind of embodiment of above only the utility model, a preferred demonstration example, present utility model application request are protected
The range of shield is not only limited in the embodiment, all guarantors that the utility model is belonged to the equivalent technical solution of the present embodiment
Protect range.
Claims (3)
1. a kind of determine torque anti-loosening locking bolt group comprising bolt, fastening nut, locking nut, which is characterized in that the spiral shell
The tail portion of bolt is equipped with two sections of oppositely oriented fastening threads and locking screw into a ladder, and the locking screw setting is fastening
The outside of screw thread, the upper surface of the fastening nut to match with fastening thread are equipped with the annular to the waist type shape of central concave
Boss is equipped with the cylinder boss to match with the annular convex platform of waist type shape, the waist type shape in the lower end surface of the locking nut
Annular convex platform and the height of cylinder boss be equal to the screw pitch of locking screw, the annular convex platform of the waist type shape is with cylinder boss
The tolerance of interference fit, interference fit matches with locking torque.
2. a kind of torque anti-loosening locking bolt group is determined according to claim 1, which is characterized in that the spiral shell of the fastening thread
Away from the screw pitch for being greater than locking screw.
3. according to claim 1 or as claimed in claim 2 a kind of determining torque anti-loosening locking bolt group, which is characterized in that described
Fastening nut is identical with size with locking nut external structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820618503.9U CN208123221U (en) | 2018-04-27 | 2018-04-27 | It is a kind of to determine torque anti-loosening locking bolt group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820618503.9U CN208123221U (en) | 2018-04-27 | 2018-04-27 | It is a kind of to determine torque anti-loosening locking bolt group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208123221U true CN208123221U (en) | 2018-11-20 |
Family
ID=64187831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820618503.9U Active CN208123221U (en) | 2018-04-27 | 2018-04-27 | It is a kind of to determine torque anti-loosening locking bolt group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208123221U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056564A (en) * | 2019-04-20 | 2019-07-26 | 吴小康 | A kind of bolt and nut connection anti-loose structure with combine |
| CN112814384A (en) * | 2021-02-05 | 2021-05-18 | 中建七局第一建筑有限公司 | Floor slab reverse supporting system based on steel pipe bundle combined structure and construction method |
| CN113137422A (en) * | 2021-04-11 | 2021-07-20 | 张俊岳 | Check bolt and nut assembly, bolt and nut |
| CN113623309A (en) * | 2020-05-09 | 2021-11-09 | 中国石油化工股份有限公司 | Self-locking screw connection structure |
-
2018
- 2018-04-27 CN CN201820618503.9U patent/CN208123221U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056564A (en) * | 2019-04-20 | 2019-07-26 | 吴小康 | A kind of bolt and nut connection anti-loose structure with combine |
| CN113623309A (en) * | 2020-05-09 | 2021-11-09 | 中国石油化工股份有限公司 | Self-locking screw connection structure |
| CN112814384A (en) * | 2021-02-05 | 2021-05-18 | 中建七局第一建筑有限公司 | Floor slab reverse supporting system based on steel pipe bundle combined structure and construction method |
| CN113137422A (en) * | 2021-04-11 | 2021-07-20 | 张俊岳 | Check bolt and nut assembly, bolt and nut |
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